Measurements of the σ₈ parameter marginalising over the galaxy bias factors, resulting from fits to the Υ_gm and Υ_gg statistics measured for the MICE lens redshift slices. We adopted a 2-parameter galaxy bias model (b_lin, b_NL) for each redshift slice, such that the fit varied 11 parameters in total. The left-hand point resulted from our fiducial analysis choice, assuming R₀ = 2.0 h⁻¹ Mpc and a point-based photo-z dilution correction. The second point from the left compares the result of a fit using only the linear galaxy bias parameter (setting b_NL = 0). We also show results varying the value of R₀ and the photo-z dilution correction. The horizontal red line indicates the MICE simulation fiducial cosmology σ₈ = 0.8.